When doing TDD or at least unit testing, it is necessary to know how much of your code is covered by tests and, more importantly, which code isn’t. Since we migrated to NUnit the integrated Visual Studio 2010 code coverage does not do the job anymore for us (although I’ve found several articles on how to enable it, for some reason I couldn’t get it running).

There are two tools that you can use instead – one of them is NCover, which is a great tool but not free. The other one is PartCover, which is a free code coverage tool. I’ve opted to go with the latter. The main problem with PartCover is the almost non-existent documentation. After several hours of trying out different combinations of options I finally got it running and it does it job really good.

One of our main requirements when performing the migration was to have the same level of integration with our Team Build system. This means that the build should run all tests and fail if any test fails. Also we should be able to see in the build log which tests have failed.

This step is the most complicated one so here is a quick breakdown of all the steps involved:

I am working in a large WPF project that is in a continuous evolution. Initially when we started the project we didn’t have any kind of unit testing in mind, then later we switched to an (almost) TDD approach. Since we use TFS for source control and automated builds, the natural decision was to use MSUnit as the test framework. Although this approach has some benefits, after the project has grown in size we have reached several limitations.

You can download my Moles presentation and demo project from the links below. Unfortunately at this moment the presentation is only in Romanian but I will translate it and provide an English version the next few days.This is a translation of the original presentation in Romanian

Disclaimer: I am not working for Microsoft, nor am I involved in this project. The slides and demo project are strictly my point of view and I am doing this to share something that I feel can be useful.